Wiring a Light Switch

Wiring a single light switch is the simplest of all light switch
configurations to wire. Two-wire Romex is run into the light switch
box where the black wires are run through the switch to close or
open the electrical circuit to the light bulb. The white or
"neutral" lines are tied together with a wing nut as shown in the
diagram. That's it. Wiring a light switch
is one of the most common wiring jobs for any home, basement, or
garage.

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